CVE-2026-4870

High

Description

IBM Qiskit SDK 0.43.0 through 2.5.0 could allow an attacker to trigger a segmentation fault leading to a denial of service due to uncontrolled recursion in the parser.

SeverityHigh

CVSS7.5

Exploit probability—

Product

Ibm Qiskit Software Development Kit

PublishedJun 12, 2026

First seenJun 12, 2026

Weakness typeCWE-674CWE-674

How to fix

Update

ibm qiskit_software_development_kit1.4.6, 2.4.2 or later

Patches

ibm.com/support/pages/node/7276123

Affected products

Product	Affected versions	Fixed in
ibm qiskit_software_development_kit	0.43.0 ≤ v < 1.4.6, 2.0.0 ≤ v < 2.4.2	1.4.6, 2.4.2

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